Abbreviated as HCA,
Host Channel Adapter is a
network fabric interconnect based on
InfiniBand technology (which provides the specification for the transmission of data between
processors and
I/O devices). It provides a computer with
port connection to other InfiniBand devices. That port can be connected to another HCA, a target device, or an InfiniBand switch fabric that redirects the data coming in on one of its ports out to a device attached to another of its ports.